package com.wyf.reggie.Controller;

import com.wyf.reggie.Entity.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {

    @Value("${reggie.path}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {
        String filename = UUID.randomUUID().toString();
        String suffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
        File dir=new File(basePath);
        if(!dir.exists()) dir.mkdirs();
        file.transferTo(new File(basePath+filename+suffix));

        return R.success(filename+suffix);
    }

    @GetMapping("/download")
    public void download(String name,HttpServletResponse response) throws IOException {
        FileInputStream fileInputStream=new FileInputStream(basePath+name);
        ServletOutputStream outputStream = response.getOutputStream();
        response.setContentType("image/jpeg");
        byte[] bytes=new byte[1024];
        int len=0;
        while((len=fileInputStream.read(bytes))!=-1) {
            outputStream.write(bytes, 0, len);
            outputStream.flush();
        }
        fileInputStream.close();
        outputStream.close();
    }
}
